Free Object C

AC++E is the acronym for Re-use Communication environnement the first letter, an adaptive Communication Environment (ACE) is an object-oriented (OO) C + + framework, written and maintained with less code, To help you develop and configure faster, high-performance network applications. Aces are useful for systems that use network or interprocess communication and multithreading. Ace Source code is open source free, its wrapper and higher level mode can help you develop software faster, portable performance helps you on time within budget ...

November 5, the official release of the letter 3.0 because of the Apple App Store audit issue postponed release. The second day of the Double 11, the micro-letter phone book was born, although the micro-letter in the letter of the CEO Hu Chen is expected, but did not expect to come out so fast. In his view, this is a godsend, is the best marketing window, decisively decided to wait for the iOS version of the audit, a week after the conference. One months later, the latest version of the letter finally landed in the app Store. Among them, the free call process will not generate network traffic, just dial one installation can be used, you can call ...

A few days ago and colleagues heated discussion, a little harvest, recorded. Let's start with the definition of MSDN: The Lock keyword can be used to ensure that the code block runs without being interrupted by other threads. 　　This is accomplished by acquiring a mutex for a given object while the code block is running. Let's take a look at the execution, and the code example is as follows: Assuming thread a executes first, thread B is slightly slower. Thread A executes to the lock statement to determine if obj has applied for a mutex and is based on the object of an existing lock. R ...

This article is my second time reading Hadoop 0.20.2 notes, encountered many problems in the reading process, and ultimately through a variety of ways to solve most of the. 　　Hadoop the whole system is well designed, the source code is worth learning distributed students read, will be all notes one by one post, hope to facilitate reading Hadoop source code, less detours. 1 serialization core Technology The objectwritable in 0.20.2 version Hadoop supports the following types of data format serialization: Data type examples say ...

The storage system is the core infrastructure of the IT environment in the data center, and it is the final carrier of data access. Storage in cloud computing, virtualization, large data and other related technologies have undergone a huge change, block storage, file storage, object storage support for a variety of data types of reading; Centralized storage is no longer the mainstream storage architecture of data center, storage access of massive data, need extensibility, 　　Highly scalable distributed storage architecture. In the new IT development process, data center construction has entered the era of cloud computing, enterprise IT storage environment can not be simple ...

The road to computer science is littered with things that will become "the next big thing". Although many niche languages do find some place in scripts or specific applications, C (and its derivatives) and Java languages are hard to replace. But Red Hat's Ceylon seems to be an interesting combination of some language features, using the well-known C-style syntax, but it also provides object-oriented and some useful functional support in addition to simplicity. Take a look at Ceylon and see this future VM ...

In the past, we have introduced some principles of software development, such as the 10 commandments of high quality code and the UNIX design principles described in the UNIX legend (next article). I believe that you can learn from middle school some knowledge of design principles, as I said in the "How Do I Recruit procedures", a good programmer usually consists of its operational skills, knowledge level, experience level and ability four aspects. Here I would like to talk about some of the principles of design, I think these things belong to the long-term experience summed up knowledge. These principles should be understood by every programmer. But...

Naresh Kumar, a software engineer and enthusiastic blogger, has great interest in programming and new things, and is happy to share technical research results with other developers and programmers. 　　Recently, Naresh wrote about 12 well-known free, open source NoSQL databases, and analyzed the characteristics of these databases. Now that the NoSQL database is becoming more and more popular, I'm here to summarize some of the great, free and open source NoSQL databases. In these databases, MongoDB the top, with considerable ...

In life and work, we often lock a focus on words "innovation" often hear people talk about the importance of innovation, how to innovate. In order to innovate we are also in the design process to brainstorm, thinking about how to get more dazzling, cooler and more unexpected design, so as to achieve innovative purposes. At the same time, we also feel that such innovation depends more on personal inspiration, inspiration is the idea of a flood of ideas, out of the way, the inspiration is gone to eclipse, puzzled. So we find innovation, no trace ... So we are repeatedly hypnotized, feel the creation ...

Cloud computing has always listened to the thunder and the rain, and for example, Amazon's S3 storage service, we haven't seen much of anything that developers can actually use to implement apps. 　　Recently, online network service provider Dropbox announced the introduction of cloud storage API, developers can be in the Dropbox account of the file for free access, edit and save. The Dropbox API is similar to Json,oauth and OpenID, and developers can deliver the user's storage needs to Dr ...